Turn off the preview pane in OE by going to View > Layout and unticking the "Show Preview Pane" box. you should now be able to click on the email without it opening and choose Delete either from the toolbar or right-click context menu.
The Evil Within 2 review-in-progress
InVision Studio takes on Adobe XD and Sketch
Camera tips to take better iPhone photos
Comment transformer un iPhone en borne Wi-Fi ?